The American Society for Radiation Oncology (ASTRO) is the largest radiation oncology society in the world, with roughly 10,000 members who are physicians, nurses, biologists, physicists, radiation therapists, dosimetrists and other health care professionals who specialize in treating patients with radiation therapies. Radiation therapy contributes to 40% of global cancer cures, and more than a million Americans receive radiation treatments for cancer each year. ASTRO publishes three medical journals, International Journal of Radiation Oncology • Biology • Physics, Practical Radiation Oncology, and Advances in Radiation Oncology, and maintains an extensive patient information website, www.RTAnswers.org. To learn more about ASTRO, visit our website and follow us on social media.